55380434 has 8 divisors (see below), whose sum is σ = 83127168. Its totient is φ = 27671380.

The previous prime is 55380433. The next prime is 55380439. The reversal of 55380434 is 43408355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55380434.

It is not an unprimeable number, because it can be changed into a prime (55380433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5402 + ... + 11829.

It is an arithmetic number, because the mean of its divisors is an integer number (10390896).

Almost surely, 2^55380434 is an apocalyptic number.

55380434 is a deficient number, since it is larger than the sum of its proper divisors (27746734).

55380434 is a wasteful number, since it uses less digits than its factorization.

55380434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18840.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 55380434 is about 7441.8031417124. The cubic root of 55380434 is about 381.1700639004.

Adding to 55380434 its reverse (43408355), we get a palindrome (98788789).

The spelling of 55380434 in words is "fifty-five million, three hundred eighty thousand, four hundred thirty-four".